Multiply paper.



T. SCHERF.

MULTIPLY PAPER.

APPLICATION FILED FEB. 21. 1911.

Patented Dec. 31, 1918.

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' THEODORE SCHERF, or CLEVELAND, 'OHIO, A SSIGNOR TO THE CLEVELAND-AKRON BAG COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

' MULTIPLY PAPER.

citizen of the United States, residing at- Cleveland, in the county of Cuyahoga and State of Ohio, have invented "a certainnew and useful Improvement in Multiply Paper, of which the following is a full, clear, and exact description, referencebeing had to the accompanying drawings. This invention relates to multi-ply paper and limitedly to paper having incorporated therewith transversely extending. threads.

' the threads serving'to reinforce or web the paper so as to strengthen the same, mak

' form strength in all directions. Furthering it suitable for the production of bags orsimilar receptacles for heavy and granulated or finely divided material. In the production of such the other ply or plies, whereby the resultant multi-ply paper will be of substantially uniand more limited objects .tobe'secured by my invention will appear in connection with the detailed description, and such objects will generally be realized in and through hereto. I

s In the drawing forming part hereof, Figure 1 represents a perspective view of a sheet of lnulti-ply paper produced in accordance with my invention, some of the plies being folded back; and Fig. 2 is a longitudinal sectional view through such sheet of multi-ply paper. v

In producing the paper illustrated herein, I apply, by any suitable mechanism (such as shown in my application Serial No. 148,204., filed Feb. 12, 1917) threads (or reinforcing strips) to a web of adhesive-coated paper, the threads or strips running lengthwise of said web and being united to the subject matter of the claims appended any suitable mechanism, such as rollers, or

. belts and rollers. In order to prevent the lateral shifting'of these threadsorstrips, I apply to said threads or strips a ply of paper, which may be of tissue and which may be united to the web and to the threads or strips by means of the adhesive material with which the said web is coated, and this uniting of the two plies of paper and the interposed threads or strips may be accom- Speoification of Letters Patent.

paper, I arrange the sameso that the fibers of certain plies will extend at substantially right angles to the fibers of uniting Patented Dec. 3 1, 1918.

' Application'flled February 21, 1917. Serial No. 150,174.

plished'by the same mechanism which unites the threads or strips to. the web.

On top of the Second web, I deposit, in succession and with their adjacent lateral edges in substantial contact, sheets of reinforced. paper. vEach of these sheets is preferably a compound sheet composed of two phes of paper having interposed therebetween, and-united thereto by a suitable adhesiv'e, threads or strips which extend lengthwise of the fibers of such plies, the

multi-ply sheets being deposited upon the tissue web with their reinforcing threads or strips extending at right angles to the reinforcin threads or strips on the first web and with the fibers of the plies extending at right angles to'the fibers the tissue sheet. These sheets are preferably applied to the tissue sheet in advance of the pressing or uniting means and will begunited to such tissue sheet by means of adhesive material with which the surface of the tissue web adjacent to said sheets is coatedfi This uniting of the first two-webs and their interposed threads or strips withthe sheets may be accomplished in part by the belt and roller arrangement such as shown in my aforesaid application. After passmg between the belts, the compound or 'multi-ply sheet composed of the two webs and the transversely extending sheets is delivered to additional pressing and uniting.

means located beyond the initial pressing or belts). In order to provide a smooth and continuous surface or backing for the sheets, I feed to the second pressing or uniting means a web of adhesive-coated paper the fibers whereof extend in the same direction .70 I of the web and of means (which, as stated, may be the last mentioned web with the 'first two webs and with the transversely extending sheets.

The resultant multi-ply paper will be composed of the first mentioned web, the warp threads or strips, the second ply or Web ofpaper (preferably tissue), the transverse sheets of two-ply paper having the fibers thereof extending at right angles to the fibers of the first two webs and having employed in the production of receptacles therebetween reinforcing threads or strips extending at right angles to the first men tioned threads or strips, and a final ply of paper composed of a web having its fibers extending in the same direction as the fibers of the first two webs. This paper is particularly strong and iscapable of being (such as bags) for the shipment of heavy material, as plaster. Reference has been made to the fact that, for the second ply or web, I preferably employ tissue paper. This paper absorbs the paste ordinarily employed for: uniting. the plies of multi-ply paper'and not only retains the warp threads against lateral displacement, but provides a mostefiicient means for uniting the first web I threads or strips for said paper at 2; the

I may make web of tissue paper which cooperates with the first web to secure such threads or strips in place at 3; the two plies of the transverse sheets at 4 and 5, respectively; the threads "interposed between the last mentioned plies at 6; and the final web at 7.

In applying the-sheets to the second web, use of the mechanism shown in my aforesaid application for the purpose of feeding a multi-ply reinforced sheet comprising the webs 4 and 5 and having the threads 6 incorporated therewithand for cutting such sheet into individual sheets the length whereof is substantiallyequal to the width of the-first two webs and for depositing such severed sheets successivel' upon the second web. For the purpose 0 applying the final web 7 to the severed sheets which are deposited upon and initially united to the web 3, I may also employ the mechanism shown in the aforesaid application.

Having thus described my invention,

what I claim is 1. A multi-ply sheet of paper comprising a web, spaced reinforcing threads on said web, a sheet of tissue paper applied to said web and said threads and united to said web by adhesive material, and a sheet of reinforced paper applied to the tissue sheet and united thereto by adhesive material.

2. A multi-ply sheet of paper comprising a web, spaced reinforcing threadsiextending longitudinally of said web, a sheet of tissue paper applied to said web on the side opposite to said threads and united to said web by adhesive material, andsheets of twoply paper applied to the tissue sheet and with their fibers extending at substantially rightangles to the fibers of the web and tissue sheet and united to the latter sheet by adhesive, there being reinforcing threads between the plies of the two-ply paper extending at substantially right angles to the first mentioned threads.

3. A multi-plypaper comprising a web, spaced reinforcing tudinally of said web,'a sheet of-tissue paper appliedto said web and said threads and united by. adhesive material to said web, sheets of webbed or reinforced paper extending transversely of the said web and tissue sheet, and united to said tissue sheet by adhesive material, and a web applied'to such transverse sheets on the side opposite the first mentioned web and united thereto by adhesive material.

4. A multi-ply sheet of paper comprising a web, reinforcing threads extending longitudinally of said web, a second web applied to said threads opposite the first mentioned web, transverse sheets of paper each having incorporated therewith reinforcing threads extending at right angles to the first mentioned threads, and a web applied to said sheets on the side opposite the first two webs, said webs, sheets, and threads being united by adhesive material.

5. A multi-ply sheet of paper comprising a web, reinforcing threads extending longitudinally of said web, a second web applied to said threads opposite the first mentioned web, transverse sheets of paper each having incorporated therewith reinforcing threads extending at right angles to the first mentioned threads, and a web applied to said sheets on the side opposite the first two webs, said webs, sheets, and threads being united by adhesive material and the fibers of the webs extending substantially at right angles to the fibers of the sheets.

6. A multi-ply sheet of paper comprising a web, reinforcing threads extending longitudinally of said web, a second web applied to said threads on the side opposite the first mentioned web, transversely extending sheets of multi-ply paper having reinforcing threads extending between V the plies thereof at right angles to the first mentioned threads, and a web extending in the same di-.

rection as the first mentioned webs and apthreads extending longiplied to said sheets on the side opposite said webs, the said webs, sheets, and threads being united by adhesive material.

In testimony whereof, I hereunto aflix my signature.

THEODORE SCHERF. 

